公开(公告)号：US09108312B2

公开(公告)日：2015-08-18

申请号：US14023766

申请日：2013-09-11

申请人： Milwaukee Electric Tool Corporation

发明人： William A. Elger ,  Kurt Limberg ,  Alexander L. Kapelevich

IPC分类号： F16H3/74 ,  B25B23/147 ,  B25F5/00

CPC分类号： B25F5/001

摘要： A multi-stage planetary transmission includes a transmission housing and a first planetary stage at least partially positioned in a transmission housing. The first planetary stage includes a first stage ring gear, a first stage carrier, and a plurality of first stage planet gears supported by the first stage carrier. A motor output pinion is engaged with each of the first stage plant gears. The transmission further includes a second planetary stage positioned downstream of the first planetary stage to receive torque from the first planetary stage and a shift mechanism operable to move the first stage ring gear between a first position, in which the first stage ring gear is rotatably fixed relative to the transmission housing for enabling the first planetary stage, and a second position, in which the first stage ring gear is coupled for co-rotation with the first stage carrier for disabling the first planetary stage.

摘要翻译： 多级行星变速器包括变速器壳体和至少部分地定位在变速器壳体中的第一行星级。 第一行星级包括第一级环形齿轮，第一级载体和由第一级载体支撑的多个第一级行星齿轮。 电动机输出小齿轮与每个第一级工厂齿轮接合。 所述变速器还包括位于所述第一行星架下游的第二行星架，以接收来自所述第一行星架的扭矩;以及变速机构，其可操作以使所述第一级环形齿轮在第一位置和第一位置之间移动，在所述第一位置， 相对于用于实现第一行星架的变速器壳体和第二位置，第一位置齿圈联接以与第一级行星架共同旋转以禁用第一行星级。